Fixed bug: save after /undo. Changed: MCForge staff titlecolors
When /undo is used and the player /unload the map without any manual block changes,
the map doesn't get saved, reverting the undo changes when the map is loaded again.
This is now fixed by using level.Save() after undo has succeeded.
Also the title colors of devs/mods/gcmods has been changed to respectively blue/lime/gold